Nail ejector means in a nail making machine



July 30, 1957 J. H. FRIEDMAN 2,,6

NAIL EJECTOR mms m A mm, MAKING momma original Filed Sept. 19', 2 SheetS-Sheet i IN V EN TOR. TOH/V- H. FE/EDNAN BY RIC/15K WA77's,:0GEETOA/4MmE/VM J. H. FRIEDMAN IN A NAIL MAKING MACHINE 2Sheets-Sheet 2 July 30, 1957 NAIL EJECTOR MEANS N U 4 INVENTOA. JOHN H-FRIEDMAN M- /VE/VN) u A I f BY RICHEWTS EDGEETDNJ United States PatentNAIL EIECTOR MEANS IN A NAIL MAKING MACHINE 310,461. Divided and thisapplication October 28, 1955, Serial No. 543,352

6 Claims. (Cl. 10-43) This invention relates to a machine for makingnails and more particularly, to that machine wherein wire stock isprogressively advanced by the stock gripping dies, headed and furtheradvanced and cut and ejected from the machine. Reference is made to myco-pending application Serial No. 310,461, filed September 19, 1952, ofwhich the instant application is a division.

More specifically, it is an object of the present invention to provide anail machine having an improved nail ejecting means operating in timedrelation with the header slide.

Another object is to provide an ejector means spring loaded byengagement with an uncut nail to eject said nail as soon as it is cutfrom the wire stock.

Further objects and advantages of my construction will appear as thedetailed description of my invention proceeds and with the explanationof the appended drawings wherein:

Fig. 1 is an elevation with parts in section showing the nail ejectorand the drive therefor; and

Fig. 2 is a plan view of the nail ejector apparatus and drive therefor.

As will be understood by those skilled in the art, the nail machineincludes a reciprocating header slide 32 driven by a crankshaft whichheader slide upsets a head on the end of the wire stock fed into themachine. The stock is thereafter advanced by the feed mechanism (notshown) into alignment with co-operating cutters for cutting the wirestock and at the same time forming a point by the cutting operationafter which the nail is ejected. For a more detailed description of thestructure operation of the nail machine, reference is made to myco-pending application Serial No. 310,461, filed September 19, 1952.

As the nail machine disclosed in said c-o-pending application is capableof high speed production of nails, for example, more than one thousandper minute, a rate such that the nails do not fall by gravity afterbeing cut in time to avoid contact with the header slide 32 at the nextadvance stroke. According to the present invention I have provided meansto forcibly eject the cut nails from the path of the header slide fasterthan the cut nails would fall free. Such ejection insures that the cutnails will be out of the way of the header slide immediately followingthe cutting operation. To achieve this new result, I provide theapparatus shown in Figs. 1 and 2 wherein a lever 20 is pivoted on themachine bed frame as at 21 and carries a roller 22 hearing against a cam23 carried by the nail machine crankshaft. The upper end of the lever 20is pivotally connected as at 24 to a longitudinally disposed rod 25which passes through an apertured bracket 26 carried by the bed framecap 27. A collar 28 is fixed to the rod and a spring 29 is arrangedbetween the collar 28 and the bracket 26 so as to urge the lever 20 in acounterclockwise direction and cause the roller 22 to bear against thecam 23.

An arm 30 is pivoted to the forward end of rod 25 and the lower end ofarm 30 is fixed to the right hand end of a transversely extending shaft31. The other end of the shaft 31 is disposed above the header slide 32and has fixed thereto a pair of longitudinally disposed flat arms 33 asviewed in Fig. 1, which support at their outer ends a verticallydisposed tube 34. A support for the tube 34 includes a block 35 which ispivoted as at 36 to the outer ends of the flat arms 33. A shoulder 37 isfixed to the tube 34 and the tube 34 is urged downwardly into thepivoted block 35 by the spring 38 which is wound about a stub shaft 39,as best seen in Fig. 2, carried by a block 40 secured as at 41 to thetransverse bracket which supports shaft 31. Since the axis of the stubshaft 39 is spaced vertically above the shaft 31 and is slightly forwardof the shaft 31, the spring 38 in effect completes a parallel linkageguiding the plunger and tube assembly 42 and 34. Since the tube 34 isurged downwardly by the spring 38 and the plunger 42 within the tube isurged downwardly by the coil spring 43 with the tube, the nail ejectoris adapted to eject nails of various sizes and hardness which ofiervarying resistance to the ejection.

Upon oscillation of the lever 20 by the crankshaft cam 23, the tube 34is raised and lowered with respect to the horizontal path of the headerslide 32.

As shown in Fig. 1, the cam 23 raises the tube 34 out of the path of theheader slide punch 32a during the heading operation of wire stock 44held in gripper dies 45 and 46. Within the tube 34 is mounted a nailengaging plunger 42 which is mounted therein for limited reciprocatingmovement with respect to the tube. The plunger 42 is urged in a downwarddirection by the coil spring 43 within the tube. When the header slideis retracted and the stock advances into cutting position, the spring 29causes the arms 33 and the tube 34 carried thereby to lower the plunger42 into engagement with the uncut nail. In this last-named position, thespring mounting of the plunger 42 is such as to cause energy to bestored in said spring 43 with the result that the plunger 42 is urgingthe nail downwardly before the nail has been cut. The result of thisarrangement is that as soon as the nail is severed by the knives, thenail is forcibly ejected downwardly by the plunger somewhat in thefashion of an arrow being shot from a how. The cam and lever arrangementis such that the plunger 42 is withdrawn as soon as the nail is ejectedfrom the path of the header slide and the header slide may advance tohead the next nail.

As will be understood by those skilled in the art, the wire stock 44 isadvanced toward the retracting header slide 32 (after the heading blow)by feed means moving in timed relation to the header slide. It will alsobe understood that the uncut nail is severed from the Wire stock 44 byco-operating cutter knives (not shown) which are also moved in timedrelation to the header slide.

Although I have described one form of my invention in considerabledetail, it will be appreciated by those skilled in the art that numerousmodifications may be made therein without departing from the scope andspirit of the invention as described in the following claims.

I claim:

1. A nail machine comprising a frame, a header slide mounted therein forreciprocation, a crankshaft to drive said header slide, nail ejectormeans comprising a lever pivoted on the bed frame, a cam roller on oneend of said lever, a cam on the crankshaft arranged to bear against saidcam roller, a transverse rockshaft mounted on the bed frame above theheader slide, means operatively connecting said rockshaft to the otherend of said lever, a plunger assembly carried by said rockshaft andadapted to be moved thereby into and out of the path of the headerslide, means to maintain said plunger assembly in vertical alignmentduring movement, said plunger assembly including a spring pressedplunger adapted to bear against a headed nail prior to the nail beingcut from the stock whereby as soon as a headed nail is severed from thestock the plunger projects the cut nail downwardly and the plungerassembly is thereafter rocked upwardly out of the path of the headerslide.

2. A nail machine comprising a bed frame, a header slide mounted forhorizontal reciprocation in the bed frame, a crankshaft for driving theheader slide, a cam shaft fixed to said crankshaft, a lever pivoted onthe frame, one end of said lever provided with a roller adapted to bearagainst said cam and the other end of said lever being operativelyconnected to a rockshaft, said rockshaft being mounted for oscillationon a horizontal axis parallel to the crankshaft, a supporting memberfixed to and extending laterally from the rockshaft, a tube supported bythe free end of said supporting memher, a vertically disposed plungermounted in said tube, said plunger projecting downwardly from the tubeand adapted when the lever is rocked to engage uncut nails in themachine, spring means urging the plunger downwardly, said spring meansbeing loaded by engagement of the plunger with the uncut nail andejecting the nail downwardly when the same is severed from the wirestock.

3. A nail machine comprising a bed frame, a header slide mounted forhorizontal reciprocation in the bed frame, a crankshaft for driving theheader slide, a cam shaft fixed to said crankshaft, a lever pivoted onthe frame, one end of said lever provided with a roller adapted to bearagainst said cam and the other end of said lever being operativelyconnected to a rockshaft, said rockshaft'being mounted for oscillationon a horizontal axis parallel to the crankshaft, a supporting memberfixed to and extending laterally from the rockshaft, a tube pivotallysupported by the free end of said supporting member, means acting onsaid tube to maintain its vertical alignment, a vertically disposedplunger mounted in said tube, said plunger projecting downwardly fromthe tube and adapted when the lever is rocked to engage uncut nails inthe machine, spring means urging the plunger downwardly, said springmeans being loaded by engagement of the plunger with the uncut nail andejecting the nail downwardly when the same is severed from the wirestock. t

4. A nail ejector for a nail machine having a frame and a header slidemounted therein for reciprocation driven by a crankshaft, said nailejector comprising in combination, a rockshaft mounted for oscillationon a horizontal axis parallel to the crankshaft, a supporting memberfixed to and extending laterally from the rockshaft, a tube pivotallymounted on the free end of said supporting member, means operative onsaid tube to maintain it in substantial vertical alignment, a plungerslidably mounted within the lower portion of said tube, means to"actuate said rockshaft in timed relation to said header slidereciprocation, said plunger projecting downwardly from said tube andadapted to engage uncut nails in the machine when the header slide hadmoved to its back center extreme of reciprocation, spring means urgingsaid plunger downwardly, said spring means being compressed byengagement of the plunger as the tube is moved downwardly by the meansto actuate said rockshaft, cutting means for severing said nail whensaid plunger is hearing down on said nail, whereby the severing of thenail by the cutting means allows the spring urged plunger to eject thenail forcibly downwardly.

5. An ejector for stock worked in a machine having a frame and aheader'slide mounted therein for reciprocation driven by a crankshaft,said ejector comprising in combination, a rockshaft mounted foroscillation on a horizontal axis parallel to the crankshaft, asupporting member fixed toand extending laterally from said rockshaft, atube member pivotally mounted on the free end of said supporting member,means engaging said tube to maintain the tube in substantial verticalalignment, a

. plunger slidably mounted within said tube, means to actuate saidrockshaf t in timed relation to said header slide reciprocation, springmeans within said tube adapted to urge said plunger downwardly of saidtube, said spring means being compressed as the rockshaft moves theplunger into engagement with the stock while the stock is securedwhen'the header slide is withdrawn, means for releasing the stock withsaid plunger engaging said stock, whereby release of the stock allowsthe spring urged plunger to eject the stock forcibly away from the pathof the header slide.

6. An ejector mechanism for forcibly ejecting stock from a machinehaving a frame and a header slide mounted therein for reciprocationdriven by a crankshaft, said ejector mechanism including in combination,a rockshaft mounted for oscillation in timed relation to said headerslide reciprocation, a supporting member fixed to and extendinglaterally from the rockshaft, a tube pivotally mounted on the free'endof said supporting member, resilient means engaging said tube andcombined with said tube supporting member and rockshaft forms asubstantially parallelogram-like linkage to maintain the tube insubstantial vertical alignment, a plunger slidably mounted in said tubeand extending therefrom, spring means within said tube adapted to urgesaid plunger downwardly of the tube, means to actuate said rockshaft intimed relation to header slide reciprocation, said plunger engaging thestock'by the actuation of said rockshaft and simultaneously compressingsaid spring means when the' header slide has withdrawn from the stock,releasing means for said stock, whereby said plunger under compressedspring actuation forcibly ejects said stock upon release of said stockafter working.

References Cited in the file of this patent UNITED STATES PATENTS319,485 Hassell June 9, 1885 1,969,390 Willard Aug. 7, 1934

